<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./lib/vue.min.js"></script>
</head>
<body>
    <div id="app">
        <input type="button" value="获取元素事件" @click = "getElement" ref = "btn">
        <h3 ref = "myh3">哈哈哈，今天天气很好！！</h3>
        <hr>
        
        <login ref = "mylogin"></login>
    </div>
    
    <script>
        var login = {
            template: '<h1>这是登录组件</h1>',
            data() {
                return {
                    msg: 'son msg'
                }
            },
            methods:{
                show() {
                    console.log("调用了子组件的方法 ")
                }
            }
        }

        var vm = new Vue({
            el:"#app",
            data:{},
            methods: {
                getElement() {
                    //ref 是 英文单词 reference 值类型和引用类型
                    console.log(this.$refs.myh3.innerHTML)
                    console.log(this.$refs.mylogin.msg)
                    this.$refs.mylogin.show()
                }
            },
            components:{
                    login
                }
        })
    </script>
</body>
</html>